diff --git a/web/viewer.js b/web/viewer.js
index 0300ce239..7250fa722 100644
--- a/web/viewer.js
+++ b/web/viewer.js
@@ -1852,7 +1852,7 @@ function webViewerInitialized() {
     document.getElementById('viewFind').classList.add('hidden');
   }
 
-  // Listen for unsuporrted features to trigger the fallback UI.
+  // Listen for unsupported features to trigger the fallback UI.
   PDFJS.UnsupportedManager.listen(PDFView.fallback.bind(PDFView));
 
   // Suppress context menus for some controls